US Patent 7448214 Geothermal hydrogen production facility and method

A system for geothermal hydrogen production comprising feed water, an input pipe extending into the earth to a sufficient depth to acquire geothermal heat, the geothermal heat capable of raising the temperature of the feed water to change the feed water from a mostly liquid state to a mostly gaseous state, an output pipe extending up through the earth to a surface of the earth, at least one filtering device coupled to and in flow communication with the output pipe to filter the heated feed water, a turbine operatively coupled to the at least one filtering device and in fluid communication with the heated feed water, a generator operatively coupled to the turbine to generate electricity, and an electrolysis apparatus coupled to and in flow communication with the at least one filtering device to receive the heated feed water, the electrolysis apparatus electrically coupled to the generator, the electrolysis apparatus is configured to disassociate the heated feed water into hydrogen and oxygen.